#313552
Closest named color: Prussian Blue (#1D3557). oklch(33.9% 0.051 277.3), rgb(49, 53, 82).
Aa
White text reads best on this color (11.92:1).
About this color
#313552 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.051 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 11.92:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.76:1 |
| White text | 11.92:1 |
Values
| HEX | #313552 |
| RGB | rgb(49, 53, 82) |
| HSL | hsl(233, 25%, 26%) |
| OKLCH | oklch(33.9% 0.051 277.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #313552 | 11.92:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #313552 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #313552 text on white | 11.92:1 | AAA | Lc 97.3 | Preferred for body text |
| #313552 text on black | 1.76:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E8
oklch(88.5% 0.022 277.5)
-
Step 300
300
#BABFDA
oklch(80.9% 0.038 277.2)
-
Step 400
400
#979EC7
oklch(70.8% 0.06 277.2)
-
Step 500
500
#7D85B9
oklch(63% 0.079 277.1)
-
Step 600
600
#676EA5
oklch(55.5% 0.086 277.7)
-
Step 700
700
#565C8D
oklch(49.1% 0.079 277.7)
-
Step 800
800
#464B73
oklch(42.6% 0.067 277.7)
-
Step 900
900 (this color)
#313552
oklch(33.9% 0.051 277.3)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#313552 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2C3853 | 0.011 |
| Deuteranopia (no green cones) | #2A3651 | 0.011 |
| Tritanopia (no blue cones) | #273B3F | 0.047 |
| Achromatopsia (no color) | #373737 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313552
#313552
oklch(33.9% 0.051 277.3)
- #3F3816
#3F3816
oklch(34% 0.052 97.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #313552, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.033
- Gunmetal #293241 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.037
- Onyx #343A40 ΔE 0.041
- Midnight Green #073B4C ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
- Charcoal #264653 ΔE 0.055
Use #313552 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.